Arch Change?

Either im dumb and missed this totally before or its just been patched in.
Im currently 560 Arch, was doing the dailies for cloud serpents to gather six fragments, and every dig (not solve) gave a skillup, resulting in 566 Arch in one dig site.
Is that old or recently patched in? As i dont rememeber gaining any skillups on dig post low lvls.

regards

Edit :- Now 575 just digging, not done solves yet.
2nd Edit :- Now 600 Arch with a skillup every single dig all the way to cap.

I had been clearing digsites all over Jade Forest in the last couple of weeks, and got myself up to 560 by completing Solves. But yesterday, I went to my first digsite in the Valley of Four Winds, and lo and behold, I started getting +1 skill-ups with every fragment pile I looted!

Not sure if this is an unannounced and intentional change, or just a bug.

Noone actually has to solve anything anymore if they want to cap Archaeology. If you start out at 525, then you only need to move to 13 dig sites and you'll get 600 skill with only needing to solve an artifact if you're about to gather 200 fragments. I just finished leveling 2 alts from 525 to 600, one was in Outland doing some herbing and the other was in Northrend / Old World (to test things out).

Arch was already easy enough to level ( I have 3 toons at 600, 7 at 525 ) but this'll make it that much easier to get some extra umbrellas for all my casters

Experience is also different depending where you're digging ( for those under 90 ). My alts are all fully rested since I've been doing massive dailies on my main, but when I was digging in Pandaria, I was only getting a little over 15k xp per dig ( 90-100k per site ), Outland / EK / Kal was giving 38k per dig ( 230k~ ), Northrend was giving almost 40k ( 237k~ ). I'm not sure why the differences in xp numbers, but they were all done on lvl 85's with the 10% guild bonus.